That's what Islamic terrorists of the IS do, and they have largely been defeated by now. The Americans did the same in Vietnam and lost. General Giap, the commander of the North Vietnamese troops, was on the winner side by paying attention to Sunzi's strategems. What you propose is a strategy for ignorant Western losers who in their unfounded arrogance think too high of themselves. Unfounded arrogance always precedes the state of a final loser.

There is only one objective in war: That is to kill the enemy. This should be done without
mercy, and without regard to the suffering of others or any consequences.